Blue light has ___ energy than red light and is ____ by a green leaf.
A. more, reflected
B. less, reflected
C. more, absorbed
D. less, absorbed
C. more, absorbed
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All of the following represent physical and/or chemical barriers that form the body's first line of defense against pathogens EXCEPT which one?
A) tears B) resident bacteria C) skin surface D) earwax E) antibodies
In the section "Investigating Life: Size Matters in Fishing Frenzy", a population declines when
A. death rate exceeds reproductive rate. B. reproductive rate exceeds death rate. C. reproductive and death rates are equal. D. smaller animals are selectively removed. E. animals are removed randomly.
The Boundary Waters Canoe Area (BWCA) is an example of which biome?
A. boreal forest B. tropical rainforest C. short grass prairie D. tundra E. temperate rainforest
Which of the following lists plants in order from most primitive to most advanced?
A. ferns ® mosses ® angiosperms ® gymnosperms B. mosses ® gymnosperms ® ferns ® angiosperms C. mosses ® ferns ® angiosperms ® gymnosperms D. mosses ® ferns ® gymnosperms ® angiosperms